Khan Academy
Khan Academy: Proof Rhombus Diagonals Are Perpendicular Bisectors
Proving that the diagonals of a rhombus are perpendicular.
Khan Academy
Khan Academy: Quadrilaterals: Quadrilateral Overview
This video identifies and defines concave quadrilaterals, convex quadrilaterals, trapezoids, parallelgrams, rectangles, rhombi, and squares.
Sophia Learning
Sophia: Classifying Quadrilaterals
This video tutorial describes how to classify quadrilaterals using key characteristics such as parallel sides and right angles. [4:27]
Sophia Learning
Sophia: Classifying Quadrilaterals
Quadrilaterals are explored in this video lesson. The tutorial describes the characteristics of various quadrilaterals. Students can check their understanding with an assessment. [6:17]
Sophia Learning
Sophia: Diagonals of a Rhombus
Explore how to solve for the diagonal length of a rhombus when given the area. Assess learning with a quiz.
Sophia Learning
Sophia: Area of a Rhombus
This video lesson demonstrates two ways for calculating the area of a rhombus. Students can check their understanding with an assessment. [4:55]
Sophia Learning
Sophia: Area of Quadrilaterals: Taking' It to the Streets
This lesson provides a video that shows examples of various quadrilaterals in the real world. A notes sheet follows describing the characteristics of each quadrilateral and how to find the area of several figures. [3:37]
Math Mammoth
Math Mammoth: Parallelograms
This video explores the properties of parallelograms. Demonstrates how to measure their lines and angles and how to draw one, and presents drawing problems for students to try on their own. [10:09]
Virtual Nerd
Virtual Nerd: How Do You Classify Quadrilaterals?
Quadrilaterals are figures with four sides and there are many different types. Watch this tutorial and try to figure out the name for any given quadrilateral. [11:03]
Math Antics
Math Antics: Quadrilaterals
Gain a basic understanding of quadrilaterals by watching this easy to understand video tutorial. Additional resources are available as part of a paid subscription service. [9:49]
Khan Academy
Khan Academy: Geometry: Area, Circumference, Volume
This video demonstrates an understanding of perimeter, volume, surface area, area, and Pythagorean theorem.
Khan Academy
Khan Academy: Quadrilateral Types
Learn to identify quadrilaterals such as kites, trapezoids, parallelograms, rhombuses, rectangles, and squares by line and angle type.
Sophia Learning
Sophia: Rhombi Practice Problems: Lesson 2
This lesson will provide examples that use the characteristics of rhombi to solve for unknown variables, side lenths, and angle measures. It is 2 of 5 in the series titled "Rhombi Practice Problems."
Sophia Learning
Sophia: Rhombi Practice Problems: Lesson 3
This lesson will provide examples that use the characteristics of rhombi to solve for unknown variables, side lenths, and angle measures. It is 3 of 5 in the series titled "Rhombi Practice Problems."
Sophia Learning
Sophia: Rhombi Practice Problems: Lesson 1
This lesson will provide examples that use the characteristics of rhombi to solve for unknown variables, side lenths, and angle measures. It is 1 of 5 in the series titled "Rhombi Practice Problems."
Sophia Learning
Sophia: Coordinate Geometry of Rhombii: Lesson 3
This lesson will demonstrate how to use slope, midpoint, and distance formulas to determine from the coordinates of the vertices if a quadrilateral is a rhombus in a coordinate plane. It is 3 of 4 in the series titled "Coordinate...
Sophia Learning
Sophia: Coordinate Geometry of Rhombii: Lesson 4
This lesson [2:19] will demonstrate how to use slope, midpoint, and distance formulas to determine from the coordinates of the vertices if a quadrilateral is a rhombus in a coordinate plane. It is 4 of 4 in the series titled "Coordinate...
Sophia Learning
Sophia: Coordinate Geometry of Rhombii: Lesson 1
This lesson [8:08] will demonstrate how to use slope, midpoint, and distance formulas to determine from the coordinates of the vertices if a quadrilateral is a rhombus in a coordinate plane. It is 1 of 4 in the series titled "Coordinate...
Sophia Learning
Sophia: Coordinate Geometry of Rhombii: Lesson 2
This lesson [8:20] will demonstrate how to use slope, midpoint, and distance formulas to determine from the coordinates of the vertices if a quadrilateral is a rhombus in a coordinate plane. It is 2 of 4 in the series titled "Coordinate...
Sophia Learning
Sophia: Rhombus: Lesson 4
This lesson explains the definition, components, and notations involved in a rhombus. It is 4 of 6 in the series titled "Rhombus."
Other
Corbettmaths: Names of Quadrilaterals Video 2
Video tutorial discusses 6 types of quadrilaterals: square, rectangle, rhombus, parallelogram, trapezium, and kite. [3:21]